| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/03/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 04/03/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/14/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/13/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/08/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/02/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/28/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/28/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/27/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/13/12 | Annual statement of changes in beneficial ownership of securities |
|
2 |